(SHANGHAI) -- Eight children were injured in a knife attack by a female employee at a Shanghai day care center on Monday.
Police arrested the unidentified 30-year-old woman who reportedly used a box cutter to slash five boys and three girls at the center for children of migrant workers in the Minhang District.
The injured children, aged 3 and 4 years old, were transported to the Fudan University Hospital for treatment. Four of the children were seriously injured, and underwent surgery. Three are in stable condition while one of the children remains in serious condition.
China state media reports that the woman, who has worked at the center for three years, is suspected of having psychiatric problems.
Similar attacks were reported in 2010, when a series of violent attacks at Chinese schools resulted in increased security at some facilities.
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